Szymon Chmal
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chmal.it
Szymon Chmal
@chmal.it
Dev Lead / Senior React Native Developer x Callstack | Microsoft MVP | Speaker | GDG Toruń Leader
The Jest integration I sneak-peeked earlier is also letting me roll out code coverage support. The coverage reporter is already in place. I just had to instrument the code and send the coverage data from the device back to the CLI. Surprisingly, it was really easy to implement!
October 20, 2025 at 4:07 PM
Harness isn't a simple tool - it's a bunch of components working together to give the best DX for testing JS code with native modules. Maintaining all that as a solo dev isn't easy, so I tried offloading some work by using Jest's CLI to run Harness… and it worked!
October 17, 2025 at 7:32 PM
Are you using the Performance API in React Native? If yes, I'm pretty sure you've wished a bunch of times that you could check out measures like you do in Chrome DevTools. What if I told you Rozenite is about to bring you that same vibe? Hot or not?
August 12, 2025 at 10:07 AM
Yesterday, the community requested server-side event support for Rozenite's Network Activity. I said I'd look into it… but somehow ended up pushing a branch with the feature almost done. Whoops! 🙈
August 6, 2025 at 3:47 PM
The Rozenite plugin family is growing, so I created a plugin directory!

It includes both official plugins and community ones like rozenite-preview.

Best part? You can add your own by opening a quick pull request on the Rozenite repo.
August 6, 2025 at 9:25 AM
New week, new feature! Struggling to understand what's going on in your WebSocket connection? Fear not! Thanks to Rozenite, you'll soon be able to inspect WebSocket traffic and review each message one by one - whether it's text, binary, or JSON. Coming soon 🔥
August 4, 2025 at 11:18 AM
Bronze trophy unlocked: 100 stars collected!
It's not platinum (yet), but every legend starts somewhere 😉
August 1, 2025 at 4:28 PM
Rozenite's Network Activity plugin got a major overhaul yesterday! The new UI and improved functionality make it much more convenient to use. You can now inspect request bodies and responses with an interactive JSON viewer 🚀
August 1, 2025 at 12:53 PM
Meet Aurora - my personal sidekick for making the best of React Native projects 🌟
February 6, 2025 at 8:52 PM